Diagnostic instrument



FIG. 1 is a front perspective view of the diagnostic instrument;

FIG. 2 is a front view of the diagnostic instrument;

FIG. 3 is a rear view of the diagnostic instrument;

FIG. 4 is a top view of the diagnostic instrument;

FIG. 5 is a bottom view of the diagnostic instrument;

FIG. 6 is a side view of the diagnostic instrument; and,

FIG. 7 is another side view of the diagnostic instrument.

The broken lines in the drawings are included for the purpose ofillustrating portions of diagnostic instrument that form no part of theclaimed invention.

The ornamental design for a diagnostic instrument, as shown anddescribed.